When to Plant Beets in Delaware
Published: April 24, 2026
Delaware gardeners in Zone 6a have a 31-week growing season for beet (March 30 to November 1). Delaware's spring and fall windows both work well for beet — some gardeners plant both successions for a long harvest. This guide gives exact dates for Delaware based on your local frost calendar.
Beet Planting Dates for Delaware
| Start seeds indoors | Year-round |
| Last frost (average) | March 30 |
| Direct sow outdoors | March 2–12 |
| Expect first harvest | April 21 – May 11 |
| Fall crop start | September 6–16 |
| Fall harvest | October 26 |
| First fall frost (average) | November 1 |
⚠ Direct sow beets 3–4 weeks before last frost. Each beet seed cluster contains 2–3 seeds — thin to 3 inches. Succession plant every 3 weeks.
Growing Beets in Delaware's Climate
Delaware's moderate Zone 6a climate is well-suited to beet with minimal special accommodation. The standard transplant calendar works as written, and harvest windows line up with what seed packets recommend without adjustment.
Succession planting extends your beet harvest significantly in Delaware. A second planting 3 to 4 weeks after the first gives you a backup in case of pest pressure and extends the total harvest window into early fall.
Common beet pests to watch for in Delaware include Leaf Miner and Flea Beetle. The first line of defense is companion planting: Onion and Garlic planted nearby discourage several of these pests by confusing host-plant identification or repelling adults before they can lay eggs. Weekly garden walks in the early morning catch problems when they're still manageable.
Beet Garden Calendar for Delaware
| Month | Task | Notes |
|---|---|---|
| January | — | Dormant season |
| February | — | Dormant season |
| March | Direct sow seeds | Sow seeds 1/4–1/2 inch deep, 3 inches apart |
| April | First harvest window opens | Beet begins producing 50–70 days after transplant |
| May ← | Watch for bolting | Harvest promptly; spring heat arrives quickly |
| June | — | Dormant season |
| July | — | Dormant season |
| August | — | Dormant season |
| September | Fall crop planting | Transplant or direct sow for fall harvest before frost |
| October | — | Dormant season |
| November | First frost approaches | Harvest remaining beet; cover plants on frost nights |
| December | — | Dormant season |
Beet Growing Tips for Delaware Gardeners
- •Soak beet seeds 4 hours before planting to soften the tough seed cluster and improve germination rates.
- •Thin seedlings to 3 inches apart — crowded plants produce tiny woody roots rather than full-sized beets.
- •Delaware's moderate climate supports succession planting — sow new transplants or seeds every 3 weeks during spring to extend the harvest window into fall.
- •Use thinnings as baby greens in salads; beet greens are more nutritious than the roots.
Companion Planting for Beets in Delaware
In Delaware's moderate climate, planting beet with Onion and Garlic helps deter pests and improve soil. Avoid planting near Pole Bean and Mustard, which inhibit beet growth through root chemistry or shared pest pressure. See the full beet companion planting guide for the complete list.
Beets Planting Dates by City in Delaware
Top cities in Delaware — select for city-level frost dates and planting calendars.
Frequently Asked Questions
When should I plant beet in Delaware?
In Delaware (Zone 6a), start beet seeds indoors around Year-round and transplant outdoors around null — 0 weeks after the state's average last frost of March 30.
What is the last frost date in Delaware?
Delaware's average last frost date is March 30 in the state's most common Zone 6a. Frost dates vary by city — higher elevations and northern counties run 1 to 3 weeks later than the state average. See the city list below for city-level frost dates.
Can I grow beet year-round in Delaware?
beet is a cool-season crop in Delaware, with spring and fall windows. Summer heat bolts the plants before they can produce a harvestable crop. Succession planting every 2–3 weeks stretches the harvest window.
What beet varieties grow best in Delaware?
For Delaware's Zone 6a, consult a local nursery or extension office for beets variety recommendations.
When do I start beet seeds indoors in Delaware?
Beet does not need indoor starting in Delaware — direct sow around March 2–12 once soil reaches 40°F. Indoor starting is not recommended for this crop because beet transplants poorly.